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| Hobbling a 6mm bar with a 3mm tap |
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| JohnHaine:
The way I did this was to put the bolt in the two ball bearings that it's going to run in, with a nut to locate it axially. Then I mounted the bearings so they straddled the centre slot of my mill table (the slots are bevelled which means they acted as mini V blocks) and clamped them lightly with strap clamps. I pulled the races apart against the bolt head and the nut so the bolt couldn't move axially though of course it could rotate in the bearings. Mounted the (M5 tap for M8 bolt) tap in a chuck in the mill spindle, moved it gently against the appropriate point on the bolt, job done in 5 minutes. If this description isn't clear I can try to recreate the setup and take some pics for you. John |
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